Electric arc additive manufacture device using magnetic field and ultrasonic vibration and method

The invention belongs to the field of additive manufacturing, and particularly relates to an electric arc additive manufacture device using a magnetic field and ultrasonic vibration and a method. Thedevice comprises an additive welding gun, a magnetic control coil, a magnetic control power supply, an ultrasonic vibration generating device and an ultrasonic vibration power supply. The magnetic control power supply controls a magnetic control coil coaxially arranged on the additive welding gun in a sleeving mode to generate the longitudinal alternating magnetic field so as to control the electric arc form, the molten drop transition behavior and the molten pool flowing behavior; and meanwhile, the ultrasonic vibration power supply controls the ultrasonic vibration generating device fixed atthe bottom of a substrate to generate ultrasonic vibration, so that the substrate and the whole additive part are subjected to ultrasonic vibration, and a molten pool is under the condition of ultrasonic vibration in the whol